My bov makes no sound at all. It seems to still be serving its pupose (I think). I even bought a new greddy type s and still no sound. I have the bov hooked up to a intake manifold vacume which is the same vacume for my boost gauge, boost controller, and wastgate. The odd thing is if I take the manual boost controller out I can hear the bov make a tiny whistle, but still dosent sound like a typical type s.
Any suggestions?
Thanks

 

try cranking down the spring, it might be too soft.

 

will try
Thanks

 

I switched the vacuum source, and now the bov is loud but I cant boost over 5lbs until 6500. Any ideas

 

Thanks for the info